JP2521238B1 - Winding bobbin wire rod rear end treatment device - Google Patents

Abstract

[Summary] [Objective] The rear end of a wire is fastened by a simple processing operation. [Structure] The drum 65 is rotated by a drum motor 95. The hook 72 of the twisted portion 66 revolves around the winding bobbin 3 which is fully wound by the rotation of the drum 65 while catching the rear end of the wire. When the torsion motor 100 is driven, the hook 72 rotates about the radial axis of the winding bobbin 3. The captured wire is twisted and fastened on the winding bobbin 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire rod winding machine for winding a wire rod on a winding bobbin or a wire rod winding machine for winding a wire rod from a bobbin to a bobbin. The present invention relates to a wire rod rear end treatment device for performing treatment.

[0002]

2. Description of the Related Art In a wire rod winding machine or a wire rod rewinding machine, a method of treating a rear end portion of a wire rod with respect to a winding bobbin in which the wire rod is fully wound is one in which the rear end portion of the wire rod is fully wound. It was taped to, fixed with a magnet, and curled at the rear end of the wire. However, for example, when the wire material is a special wire, the place where the tape is attached is discolored and unusable, and the removal work is troublesome in the next step. In addition, there is a drawback that the bobbin comes off during transportation and the reliability is low.

Therefore, as a prior art for solving such a drawback, in Japanese Utility Model Publication No. 2-1317, a winding start end and a winding end end of a wire rod coil on a winding bobbin are fixed by twisting. A terminal binding machine for wire coils is disclosed. This is to insert a rotatable blade formed in an S shape into the winding start end and the winding end end intersection of the wire rod coil, and rotate the blade to form the winding start end and the winding end end of the wire rod coil. Is twisted and fixed.

In Japanese Patent Publication No. 6-15389,
An end line fastening method and a device for fastening a linear body on a reel are disclosed. This involves hooking a linear member stretched between the reel and the traverser, which has been wound up, with a hooking member, rotating the hooking member in the direction opposite to the direction of rotation of the reel, and stretching it between the reel and the traverser. The linear body is rotated until it crosses the hooking member again, and the linear body crossing the hooking member again is gripped by the wire rod gripper slidably provided in the hollow of the hooking member. Then, the linear body stretched between the wire rod gripping tool and the traverser is cut, and then the wire rod gripped by the wire rod gripping member is passed through the loop of the wire rod caught by the hooking member, The ring of the strip is removed from the hooking member, and the wire gripping tool is further rotated in the direction opposite to the rotation direction of the reel to fasten the strip on the reel.

[0005]

SUMMARY OF THE INVENTION However, in the wire coil terminal binding machine of Japanese Utility Model Publication No. 2-1317, the S-shaped blade is rotated to twist the winding start end and winding end end of the wire coil. However, since the crossing portion between the winding start end and the winding end end of the wire coil is formed in advance by capturing the winding start end and the winding end end on the catching plate, the crossing portion always has the same state. It is very troublesome to operate the wire coil because it is necessary to form the part and to align the crossing part at a position where it can be engaged well with the S-shaped blade, and it takes a lot of man and time to process the wire coil. There was a drawback that

In the method for fastening the end wire of Japanese Patent Publication No. 6-15389, particularly, since the hook member is rotated in the direction opposite to the reel winding direction to hook the wire rod with respect to the reel in the stopped state, In the case of a thin wire rod, it may break when it is hooked, and in order to prevent this, it is necessary to control a complicated device such as driving a motor on the wire rod supply side to feed the wire rod. Further, there is a problem that the processing operation of rotating the hooking member, gripping the wire rod, and passing through the loop of the wire rod is complicated, and it takes a long processing time to deteriorate productivity.

In view of the above, it is an object of the present invention to provide a wire rod rear end treatment device for a winding bobbin, which can fasten the rear end portion of a wire rod by a simple treatment operation and can automatically perform the treatment. .

[0008]

As shown in FIG. 1, the means for solving the problems according to the present invention is such that as shown in FIG. 1, the rear end of the wire is wound around the winding bobbin 3 rotatably supported by the support shafts 20a and 20b. Wire rod gripping means 61 for catching the wire rod gripping means 6
1 is provided with a driving means 62 for rotating the support shafts 20a, 20b as a center, and a rear end processing means 63 for rotating the wire gripping means 61 with respect to the wire to twist and fasten the wire.

A wire rod holding means for holding the wire rod upstream of the wire rod holding means 61 in the wire winding direction is provided so that the wire rod does not break when the wire rod is twisted.

Further, the wire rod gripping means 61 has a twisted portion 66 for catching the wire rod, and the twisted portion 66 is restricted from rotating in a direction in which the twisted wire rod is separated from the twisted portion 66.

[0011]

In the above means for solving the problems, the wire rod gripping means 61 is driven by the driving means 62 around the fully wound winding bobbin 3.
When is rotated, the twisted portion 66 of the wire gripping means 61 is caught at the rear end of the wire. Then, when the wire rod gripping means 61 is rotated with respect to the wire rod by the rear end processing device 63, the caught wire rod is twisted. At this time, since the wire rod gripping means 61 holds the wire rod upstream of the wire rod gripping means 61 in the winding direction of the wire rod, the wire rod further upstream cannot be pulled and the wire rod cannot be cut.

Then, when the winding bobbin 3 is removed, the twisted wire material is separated from the twisted portion 66. At this time, the twisting portion 66 is turned in the opposite direction by restricting the turning of the wire rod in the separating direction, whereby the wire rod is smoothly removed from the twisting portion 66.

[0013]

EXAMPLE A wire rod rewinding machine of this embodiment is for winding a wire rod wound around a large bobbin into a small take-up bobbin, and the wire rod is supplied from a bobbin 1 on the supply side as shown in FIGS. Wire feeding device 2 and a wire winding device 4 for winding the wire from the wire feeding device 2 on a small winding bobbin 3.
And a bobbin automatic exchanging device 6 for exchanging the fully wound winding bobbin 3 and the empty winding bobbin 3.

The wire rod feeder 2 is arranged on the right side of the rewinder main body 10 and is rotatably supported by a pair of front and rear drive side central shafts 11a and 11b.
And a storage wire roller 13 for temporarily winding the wire from the supply bobbin 1. The respective center shafts 11a and 11b are rotatably attached to the rewinder main body 10, and the driven side center shaft 11b moves in the front-rear direction so that the supply side bobbin 1 moves to the center shafts 11a and 11b.
Can be detached from.

The supply-side drive unit 12 has a drive-side central shaft 11a.
The drive motor 15 includes a pulley 14 fixed to the rear end, a drive motor 15 fixed to the rewinder main body 10, a motor pulley 15a of the drive motor 15 and a belt 16 wound around the pulley 14. The driving force of the motor pulley 1
5a, belt 16, pulley 14, and drive side central shaft 11
It is transmitted to the supply side bobbin 1 via a.

The storage wire roller 13 has a fixed roller 13a supported by the vertical wall 10a of the rewinding machine body 10 above the supply side bobbin 1 and a vertical wall of the rewinding machine body 10 below the fixed roller 13a. 10 a and a movable roller 13 b mounted on a support rod 17 so as to be vertically movable.
One end of the support rod 17 has a vertical wall 10a of the rewinder body 10.
The movable roller 13b is rotatably attached to the bent portion, and the circular weight 1 is formed substantially at the center of the support rod 17.
8 are attached. That is, the slack or pull of the wire rod caused by the drive error between the drive motor 15 of the supply side bobbin 1 and the motor of the winding bobbin 3 described later causes the movable roller 13b to move up and down and move closer to and away from the fixed roller 13a. Adjusted by

The wire rod winding device 4 is arranged at the center of the rewinder main body 10 and rotatably drives the winding bobbin 3 rotatably supported by a pair of front and rear drive side support shafts 20a and driven side support shafts 20b. The take-up drive unit 21 and a guide roller 22 that guides the wire rod supplied from the supply-side bobbin 1 through the wire-storing roller 13 to the take-up bobbin 3 are guided by a traverse mechanism. It is reciprocally moved in the direction of the support axis 3. A not-shown convex engagement body that engages with the center hole of the winding bobbin 3 is attached to the tip of each of the support shafts 20a and 20b.
b is rotatably attached to a support stand 24 provided upright on the rewinder main body 10, is movable in the front-rear direction by a cylinder, and is driven to rotate by the rotation of the winding bobbin 3. Also,
The drive side support shaft 20a is rotatably attached to the vertical wall 10a of the rewinding machine main body 10, and the winding side drive unit 2 is provided at the rear end thereof.
A bobbin drive pulley 25 connected to 1 is attached. The take-up bobbin 3 can be attached to and detached from the support shafts 20a and 20b by moving the driven-side support shaft 20b in the front-rear direction similarly to the supply-side bobbin 1.

The take-up side drive section 21 is a drive side support shaft 20b.
A bobbin drive pulley 25 fixed to the rear end, a drive motor 26 fixed to the vertical wall 10a of the rewinder body 10, a motor pulley 26a of the drive motor 26, and a belt 27 wound around the bobbin drive pulley 25. And the driving force of the drive motor 26 is a motor pulley 26a, a belt 27,
It is transmitted to the take-up bobbin 3 via the bobbin drive pulley 25 and the drive side support shaft 20a.

As shown in FIGS. 4 and 5, the cutting device 5 comprises a nipper 30 which is opened and closed by a pneumatic cylinder, and an air cylinder 31 which moves the nipper 30 back and forth, and is arranged diagonally above the winding bobbin 3. The air cylinder 31 is attached to the vertical wall 10a of the rewinder body 10 via a bracket 32, and the nipper 30 is attached to the tip of a rod 31a of the air cylinder 31 via a connecting plate 33. FIG.
As shown in FIG. 3, a wire rod chuck 34 that holds the wire rod is provided between the guide roller 22 and the winding bobbin 3. The wire rod chuck 34 grips a wire rod on the upstream side of the nipper 30 and fixes the wire rod at a position where the wire rod can be easily cut when the wire rod is cut by the nipper 30. Then, the leading end of the wire that is gripped and cut becomes the starting end of the wire that is wound on the next winding bobbin 3.

As shown in FIGS. 2 and 3, the automatic bobbin changing device 6 rewinds the take-in bobbin 3 into which the empty take-up bobbin 3 is loaded into the rewinding machine main body 10 and the fully wound take-up bobbin 3. The carry-out section 36 for carrying out the machine body 10, the moving lifter 37 for carrying the empty take-up bobbin 3 from the carry-in section 35 to the take-up bobbin mounting position of the wire rod winding device 4, and the fully wound take-up bobbin. Lifting lifter 38 that lowers 3 from the wire rod winding device 4, and take-up bobbin 3 that is lowered by the lifting lifter 38.
6 and a transport section 39 for sending to 6.

The carry-in section 35 and the carry-out section 36 are arranged on the left side of the main body 10 of the rewinding machine in the upper and lower stages in the front-rear direction.
A plurality of mounting tables 40 on which the winding bobbin 3 is mounted, and a mounting table 4
It is composed of a chain 41 for moving 0 in one direction, and a motor 42 for rotationally driving the chain 41. The upper stage serves as the carry-in section 35, and the empty take-up bobbin 3 is moved forward, and the lower stage carries out the full-winding bobbin 3 from the carry-out section 36 in the backward direction. Then, the moving lifter 37
Is disposed above the carry-in section 35 and the wire winding device 4, and the suction body 43 that sucks and holds the empty winding bobbin 3 is attached to the vertical wall 10a of the rewinding machine body 10. A vertical cylinder 45 and a horizontal cylinder 46 are mounted on the rail 44 so as to be vertically movable and horizontally movable.

The transport section 39 is disposed below the wire winding device 4 in the left-right direction and has a carriage 47 on which the winding bobbin 3 is placed.
And a chain 48 for moving the carriage 47 and a chain 4
A pair of sprockets 49 around which 8 is wound, and a motor 50 for rotating the sprockets 49 are provided, and an elevating lifter 38 is arranged in the carrying section 39. The lift lifter 38 includes a support plate 51 that supports the carriage 47 and a cylinder 38a that moves the carriage 47 up and down, and moves the carriage 47 up and down between the support shafts 20a and 20b of the wire rod winding device 4 and the transport unit 39. Then, the winding bobbin 3 is lowered from the wire rod winding device 4 to the transport section 39.

In the wire rod rewinding machine of the present embodiment, when the winding bobbin 3 is replaced, the wire rod is treated so that the rear end of the wire rod of the winding bobbin 3 which has been fully wound does not come apart. A trailing edge processing device is provided. This wire rod end treatment device
As shown in FIG. 1, a wire rod gripping means 61 for catching the rear end portion of the wire rod while orbiting around a winding bobbin 3 rotatably supported by the support shafts 20a and 20b, and the wire rod gripping means 61 Drive means 62 for rotating about 20a, 20b
And a rear end processing means 63 for twisting and fastening the wire rod by rotating the wire rod gripping means 61 with respect to the wire rod around the radial axis of the winding bobbin 3.

The wire rod gripping means 61 includes a driven side support shaft 20b.
The drum 65 is rotatably arranged around and the twisted portion 66 that holds and twists the captured wire. Drum 65
Is formed in a ring shape, and the support shaft 24 is attached to the support base 24.
The sprocket 6 is rotatably attached via a bearing to a cylindrical fixed body 67 that is fixed so as to be coaxial with 0a and 20b, and is connected to the drive means 62 on the outer circumference on the front side.
8 are attached. Also, on the outer periphery of the drum 65,
A support body 69 is provided to support a twisted portion 66 that is formed by projecting in the radial direction of the winding bobbin 3 and is bent toward the rear side. The support body 69 has a tip formed in the radial direction of the winding bobbin 3. A cylinder 70 having a through hole 70a
The twisted portion 66 is rotatably inserted in the insertion hole 70 a of the cylinder 70.

As shown in FIGS. 1 and 6, the twisted portion 66 is a cylinder 70.
The shaft 71 is rotatably inserted through the insertion hole 70a, and the wire rod holding hook 72 is rotatably supported by the shaft 71. A flange 73 is formed in the center of the shaft body 71, and one end of the shaft body 71 on the winding bobbin 3 side is formed in a U shape in which the center portion is scraped off. Perforations 74 are provided in a direction orthogonal to
A roll pin 75 pivotally supporting the hook 72 is fixed to the hole 74. In addition, the flange 73 of the shaft 71 is the cylinder 70.
Of the shaft 71, and the other end of the shaft 71 sandwiching the flange 73 is projected through the insertion hole 70a of the cylinder 70 in a direction away from the winding bobbin 3. Engagement claw 76 with which the other end of 71 is engaged with the rear end processing means 63.
Is installed. A coil spring 77 is interposed between the engaging claw 76 and the cylinder 70, and the shaft 71 is biased in the radial direction of the winding bobbin 3 by the biasing force of the coil spring 77.

The engaging claw 76 is formed in a rectangular shape, is fixed to the other end of the shaft body 71 by a pin 78, and is provided with a groove 79 into which an engaging plate of a rear end processing means 63 described later is fitted. . The groove 79 is cut in the same direction as the rotation direction of the hook 72, and the corner of the groove 79 is chamfered 79a.

The hook 27 is bent in a hook shape so that the tip of the hook 27 hooks the wire rod, and a connecting rod 80 connected to the shaft body 71 is projectingly provided at the rear end of the hook 27. It is inclined in a direction away from the winding bobbin 3 so as not to exist. Further, the end portion of the connecting rod 80 is formed in a flat plate shape with both sides cut off, and a shaft hole 81 is bored in the end portion in a direction orthogonal to the axial center of the connecting rod 80. The shaft hole 81 and the hole 74 at one end of the shaft body 71 are aligned with each other, the roll pin 75 is inserted into the hole 74 and the shaft hole 81, and the hook 72 becomes rotatable around the roll pin. Then, one corner of the end of the connecting rod 80 (the hook 72
80a is formed in an arc shape centering on the shaft hole 81, and the other corner 80b is a right angle.

Further, as shown in FIGS. 1 and 6, the twisting portion 66 is provided with fixing means for fixing the hook 72 so as not to rotate when the wire rod is caught. This fixing means
It is composed of a cylindrical fixed bracket 85 slidably arranged between the hook 72 and the cylinder 70, and a cylinder 86 for sliding the fixed bracket 85. One end of the fixed bracket 85 contacts the rear end of the hook 72. A fixed posture A in contact with one another, and a rotation posture B in which the other end abuts the flange 73 of the shaft 71 (see FIG. 6).
(Indicated by the middle two-dot chain line). Then, at one end of the fixed bracket 85, a protruding portion 72a protruding from the rear end of the hook 72 when the fixed bracket 85 is in the fixed posture A.
Is formed with a notch 87 in which the fixing bracket 85
At the other end, an arm portion 88 bent in a step shape is provided so as to protrude in the radial direction of the shaft body 71. In addition, the cylinder 86 is a fixed body 6 fixed to the support base 24 via a bracket 91.
7 and is arranged at a horizontal position on the left side of the winding bobbin 3.

A pair of guide rods 89 protruding in the radial direction of the winding bobbin 3 are attached to the arm portion 88 of the fixed bracket 85, and the guide rods 89 can slide on the support 69 of the drum 65. And a coil spring 90 is interposed between the arm portion 88 and the support body 69 around the guide rod 89.
The fixed bracket 85 is biased toward the hook 72 side by the coil spring 90. The stop body 92 attached to the end of the guide rod 89 contacts the outer surface of the support body 69,
The movement of the fixing bracket 85 in the winding bobbin direction by the coil spring 90 is stopped. In addition, the fixed bracket 85
6, the one end of the fixing bracket 85 is stopped at a position where the end of the connecting rod 80 of the hook 72 is slightly hidden as shown in FIG. 6, and the other corner 80b of the end of the connecting rod is fixed to the fixing bracket 85. The contact of the twisted wire with the inner wall of the hook is restricted so that the twisted wire is prevented from rotating in the direction of the tip of the hook 72, and the twisted wire is allowed to rotate only in the opposite arrow a direction.

As shown in FIGS. 2 and 7, the driving means 62 includes a sprocket 68 attached to the front side of the drum 65, a drum motor 95 fixed to the right side of the support base 24 of the rewinding machine body 10, and a drum motor. 95 motor sprocket 95
a and a chain 96 wound around the sprocket 68 of the drum 65, the driving force of the drum motor 95 is transmitted to the drum 65 via the motor sprocket 95a, the chain 96 and the sprocket 68, and the twisted portion 66
The hook 72 of is rotated in the same direction as the winding direction of the winding bobbin 3. A proximity switch 97 for detecting the twisted portion 66 is attached to the left side of the support base 24 of the rewinder body 10 via a bracket 98. The proximity switch 97 detects the detection plate 99 attached to the support 69 of the opposing drum 65, whereby the twisting portion 66 is stopped at the horizontal position on the left side of the winding bobbin 3, and the twisting portion 66 is located at this position. Is rotated.

As shown in FIGS. 1 and 8, the trailing end processing means 63 includes a torsion motor 100 that rotationally drives the torsion portion 66, and a cylinder 101 that moves the torsion motor 100 in the left-right direction to move the torsion motor 100 closer to and away from the torsion portion 66. And is arranged on the left side of the winding bobbin 3. The cylinder 101 is attached to the vertical wall 10a of the rewinder main body 10 via a bracket 102, and the torsion motor 100 includes the rod 10 of the cylinder 101.
It is attached to the tip of 1a via a connecting plate 103.
The motor shaft 100a of the torsion motor 100 is provided with an engagement plate 104 which is fitted into and engaged with the groove 78 of the engagement claw 76 attached to the other end of the shaft body 70 of the torsion portion 66. The driving force of the torsion motor 100 is the engaging plate 104.
And is transmitted to the twisting portion 66 via the engaging claw 76. The connection plate 103 has a proximity switch 1 for detecting a wire rod capturing posture in which the tip of the hook 72 of the twisted portion 66 faces rearward.
Reference numeral 05 denotes a front side of the motor shaft 100a, and proximity switches 106 for detecting a wire rod separation attitude in which a tip of the hook 72 of the twisted portion 66 faces downward are mounted below the motor shaft 100a via brackets 107, respectively. The both proximity switches 105 and 106 detect the detection plate 108 attached to the opposing motor shaft 100a, whereby the rotation and stop of the twisted portion 66 are controlled. Also, in the figure,
109 is a leaf spring that stabilizes the rotation of the motor shaft 100a,
109a is a bracket for mounting the leaf spring 109.

When twisting the wire rod, wire rod holding means is provided for holding the wire rod upstream of the twisted portion 66 in the wire winding direction so as not to be pulled. This wire rod holding means is, as shown in FIGS. 2 and 9, a gripping cylinder 11 attached to a vertical wall 10a of a rewinder body 10 via a bracket 110.
The gripping cylinder 111 includes a pair of fingers 112 that open and close in the direction of the arrow when air is supplied, and is disposed between the guide roller 22 and the storage line roller 13.
Then, on both fingers 112 of the gripping cylinder 111,
A gripping body 113 for sandwiching the wire is attached to the gripping body 1
Reference numeral 13 is formed of an elastic plastic resin such as nylon so as not to damage the wire when the wire is sandwiched.

The position of each of these devices is detected by a detector such as a proximity switch, and based on the output signal from the detector, the device is moved forward, backward, leftward, rightward, downward, and fixed in position. Sequence control such as stop of

In the above wire rod rewinding machine, the processing movement of the rear end portion of the wire rod which occurs when the fully wound winding bobbin 3 and the empty winding bobbin 3 are replaced will be described.

First, when the wire rod from the supply side bobbin 1 is fully wound around the winding bobbin 3, a full length signal is output and the drive motors 15 and 26 on the supply side and the winding side are decelerated, respectively. At this time, when the guide roller 22 is stopped at a predetermined position and it is detected that the guide roller 22 is at that position, both drive motors 15 and 26 are stopped.

Then, the drum motor 95 is driven to catch the rear end of the wire of the winding bobbin 3 which is fully wound by the twisting portion 66. That is, the drum 65 rotates in the same direction as the winding direction of the winding bobbin 3 and the twisted portion 66
Goes around the winding bobbin 3, and the hook 72 catches the wire between the winding bobbin 3 and the guide roller 22.
At this time, the twisting portion 66 of the hook 72 is stopped in advance with its front end facing the rear side, the fixing bracket 85 is held in the fixed posture A by the coil spring 90, and the notch 87 of the fixing bracket 85 is hooked. The hook 72 is fixed so as not to rotate by fitting into the convex portion 72a of 72. When the twisting portion 66 makes two revolutions around the winding bobbin 3 in this state, the hook 72 catches the last wound wire rod of the winding bobbin 3 and the wire rod one round before the final winding, as shown in FIG. Then, the detection plate 99 of the support 69 is detected by the proximity switch 97, the drum motor 95 is decelerated, and the twisting portion 66 is stopped at the horizontal position on the left side of the winding bobbin 3 as shown in FIG.

Next, the twisting motor 100 is moved to the right in order to twist the wire rod captured by the twisting portion 66. Then, the engagement plate 104 of the torsion motor 100 fits into the groove 79 of the engagement claw 76 of the shaft 71, the engagement plate 104 and the engagement claw 76 are engaged, and the movement of the torsion motor 100 is stopped. At this time, the twisting portion 66 is slightly pushed toward the winding bobbin 3 side against the biasing force of the coil spring 77 by the twisting motor 100, and the convex portion 72a of the hook 72 is disengaged from the notch 87 of the fixed bracket 85 and the twisting portion is formed. 66 is rotatable. When the groove 79 of the engaging claw 76 and the engaging plate 104 do not face each other, the shaft body 71 is pushed by the movement of the torsion motor 100 toward the winding bobbin 3 against the biasing force of the coil spring 77. However, when the torsion motor 100 is rotated and the engaging plate 104 is aligned with the direction of the groove 79 of the engaging claw 76, the shaft body 71 is returned to the original state by the urging force of the coil spring 77 and the engaging plate 104 is engaged. It fits into the groove 76 of the claw 76.

Then, the gripping cylinder 111 is operated,
The fingers 112 are closed, and the wire rod between the guide roller 22 and the storage roller 13 is held by the holding body 113.

After that, when the torsion motor 100 is driven, the torsion portion 66 rotates counterclockwise around the axis of the shaft body 71, and the captured wire rod is twisted. When the twisting portion 66 rotates 4 times or 5 times, the twisting motor 100 is stopped in the wire rod capturing posture in which the tip of the hook 72 is directed rearward, and the rotation of the twisting portion 66 is stopped. Next, the hook 72
In order to separate the wire from the wire rod, the torsion motor 100 is rotated in the reverse direction, that is, the torsion portion 66 is rotated 270 degrees clockwise around the axis of the shaft body 71, and the tip of the hook 72 is directed downward as shown in FIG. The twisted portion 66
Rotation is stopped. Following this, the fixing bracket 8
The arm portion 88 of No. 5 is pushed by the cylinder 86 against the urging force of the coil spring 90, the fixed bracket 85 is switched to the rotation posture B, and the twisting portion 66 becomes rotatable.

The wire rod upstream of the twisted portion 66 in the wire winding direction is gripped by the wire chuck 34, and the nipper 30
The wire rod is cut by. Then, the lift lifter 38 is raised to position the carriage 47 below the winding bobbin 3. After that, when the support shafts 20a and 20b are opened and the lift lifter 38 is lowered, the twisted wire rod is detached from the hook 72 as the winding bobbin 3 is lowered. At this time, since the hook 72 is restricted from rotating in the separating direction of the wire and the tip of the hook 72 is inclined, the hook 72 is rotated in the direction of arrow a by moving the wire downward. The wire rod is smoothly disengaged from the hook 72, and the wire rod is fastened on the winding bobbin 3 in a twisted state. Then, the bobbin automatic exchange device 6 replaces the empty winding bobbin 3 with the empty winding bobbin 3, and thereafter, the winding of the wire on the winding bobbin 3 and the rear end treatment of the wire are repeated.

As described above, since the rear end of the wire wound on the winding bobbin 3 is twisted and fastened by the twisting portion 66,
Particularly, even a thin wire rod having a weak stiffness is easily assembled, the rear end portion of the wire rod is not separated, and the wire rod is easily handled in the next step. Moreover, since the twisted portion 66 is wound around the winding bobbin 3 to catch the rear end portion of the wire rod, and the twisted portion 66 is rotated by the twisting motor 100, the wire rod is twisted and fastened. The rear end treatment of the wire can be performed faster and more easily than before, without the need for complicated device control or complicated treatment operation. Therefore, there are few constituent parts as the wire rod rear end treatment device, and it is possible to contribute to cost reduction and downsizing of the wire rod rewinding machine and the like to be mounted.

When the wire rod is caught, the hook 72 of the twisted portion 66 is fixed by fitting the convex portion 72a into the notch 87 of the fixing bracket 85, so that the hook 72 is wound without wobbling or falling. The wire rod can be reliably caught by revolving around the take-up bobbin 3.

When the wire rod is twisted, the twist causes the wire rod upstream of the twisted portion 66 to approach the twisted portion 66, that is, the wire rod upstream is pulled.
Since the wire rod on the upstream side of the twisted portion 66 is grasped by 3, the wire rod on the upstream side is not pulled,
It does not happen that the wire breaks, and is particularly effective for thin wire and soft wire.

Further, when the twisted wire is removed from the hook 72, the hook 72 is restricted from rotating in the separating direction and rotates in the opposite direction, so that the wire is not caught by the hook 72. It comes off smoothly and easily. Therefore, when used with the bobbin automatic changing device 6, the wire rewinding machine can be operated unattended for a long time and the productivity is improved.

The present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention. For example, in the above-described embodiment, when the captured wire rod is twisted, the hook 72 is stopped in the wire rod capturing posture, and then the hook 72 is rotated again to the wire rod separating posture to remove the winding bobbin 3. When the hook 72 is stopped in the wire rod separating posture when twisted, the control operation of the device is reduced and the wire rod processing operation is also speeded up.

Further, the wire rod trailing end treatment apparatus of this embodiment is applied to a wire rod rewinding machine for rewinding a wire rod from a bobbin to a bobbin, but it is processed by a twisting machine, a wire drawing machine or the like. It may be applied to a wire winding machine or the like that winds a wire around a winding bobbin.

[0047]

As is apparent from the above description, according to the present invention, the rear end of the wire wound on the winding bobbin is twisted and fastened by the wire gripping means, so that the wire is particularly thin. However, they are easily put together, the rear end of the wire does not come apart, and the wire can be easily handled in the next step. Moreover, the wire rod gripping means is wound around the winding bobbin to catch the rear end portion of the wire rod, and the wire rod gripping means is rotated by the rear end processing means to twist and fasten the wire rod. The rear end treatment of the wire rod can be performed faster and more easily than before without the need for such complicated device control and complicated treatment operation. Therefore, there are few constituent parts as the wire rod trailing end treatment device, and it is possible to contribute to cost reduction and downsizing of the wire rod rewinding machine to be mounted.

When the wire rod is twisted, the twisting causes the wire rod upstream of the wire rod gripping means to approach the wire rod gripping means, that is, the upstream wire rod is pulled, but the wire rod gripping means causes the wire rod gripping means to pull the wire rod from the wire rod gripping means. Also, since the wire rod on the upstream side is grasped, the wire rod on the upstream side is not pulled further, and the wire rod does not break. Particularly, a thin wire rod is effective for a soft wire rod.

Further, when the twisted wire rod is removed from the wire rod holding means, the wire rod holding means is restricted from rotating in the separating direction and rotates in the opposite direction, so that the wire rod holds the wire rod holding means. It is smooth and can be easily removed without getting caught in. Therefore, by using it with the bobbin automatic changer,
The unmanned operation of the wire rewinding machine or the wire rewinding machine for a long time becomes possible, and the productivity is improved.

[Brief description of drawings]

FIG. 1 is a plan view of a wire rod rear end processing device according to an embodiment of the present invention.

FIG. 2 is a front view of the wire rewinding machine.

FIG. 3 is a side view of the wire rod rewinding machine.

FIG. 4 is a front view of the cutting device.

FIG. 5 is a side view of the cutting device.

FIG. 6 shows a twisted portion, (a) is a plan view and (b) is a front view.

FIG. 7 is a front view of driving means.

FIG. 8 is a side view of the trailing edge processing means.

FIG. 9 is a side view of the gripping cylinder.

10A and 10B show a state in which a twisted portion catches a rear end portion of a wire rod, FIG. 10A is a plan view, and FIG. 10B is a front view.

FIG. 11 is a diagram showing a state in which the twisted portion twists the wire rod.

[Explanation of symbols]

 3 winding bobbin 20a, 20b support shaft 61 wire rod gripping means 62 driving means 63 rear end processing means 66 twisting section 111 gripping cylinder

Claims (3)

(57) [Claims] 1. A wire rod holding means for catching a rear end of a wire rod while circling around a winding bobbin rotatably supported by a support shaft, and the wire rod holding means is rotated about the support shaft. A wire rod rear end treatment device for a winding bobbin, comprising: a drive unit; and a rear end treatment unit that rotates the wire rod gripping unit with respect to the wire rod to twist and fasten the wire rod. 2. A wire rod rear end of a winding bobbin according to claim 1, further comprising wire rod holding means for holding the wire rod upstream of the wire rod holding direction when the wire rod is twisted. Processing equipment. 3. The wire rod gripping means has a twisted portion for catching the wire rod, and the twisted portion is restricted from rotating the twisted wire rod in a direction away from the twisted portion. 1. The winding bobbin wire rod rear end treatment device according to 1.